Start with what the paragraph is about and put it basically in your own words
Answer:
From the second law of motion:
F = ma
we are given that the force applied on the block is 20N and the block accelerates at an acceleration of 4 m/s/s
So, F= 20N and a = 4 m/s/s
Replacing the variables in the equation:
20 = 4* m
m = 20 / 4
m = 5 kg
Technically speaking, there are many "levels" of a plant for which this may hold true. I think the one you are referring to is the chloroplast. It takes in the light energy from the sun, water and carbon dioxide, and performs photosynthesis on them to produce sugar and oxygen. A leaf would also fit the description as this is a very general question.
<span>So are strong bases. The reason acids and bases conduct electricity is that when they are mixed with water, they "separate" into ions. And the ions are charge carriers. These charge carriers can be made to carry a charge (which is why that description fits them).</span>
